.App{
  text-align: center;
}

.App-head{
  background-color: #1982cc;
  /* min-height: 100vh; */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: calc(20px + 2vmin);
  font-weight: bold;
}

.App-menu{
  background-color: #1982cc;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
}
.App-menu button{
  margin: 5px;
  font-size: calc(8px + 1.5vmin);
  border: none;
  background-color: #1982cc;
  color: white;
}
.App-menu button:hover{
  font-size: calc(16px + 1.5vmin);
  border: none;
  background-color: #1982cc;
  color:gold;
  cursor: pointer;
  border-bottom: 1px solid gold;
}

.book{
  display: flex;
}

.book .slider{
  background-color: #1982cc;
  padding-left: 5px;
  min-height: 100vh;
  max-width: 25vw;
  font-size: calc(18px + 1.5vmin);
  display: flex;
  flex-direction: column;
}
.book .slider .menu{
  text-align: left;
  margin: 5px;
  font-size: calc(6px + 1.5vmin);
  border: none;
  background-color: #1982cc;
  color: white;
}
.book .slider .menu:hover{
  cursor:pointer;
  color: gold;
  font-size: calc(8px + 1.5vmin);
  font-weight: bold;
  border-bottom: 2px solid black;
}

.book .slider .menu-selected{
  text-align: left;
  margin-top: 5px;
  font-size: calc(8px + 1.5vmin);
  font-weight: bold;
  border: none;
  background-color: #1982cc;
  color: black;
  border-bottom: 2px solid black;
}

.book .body{
  min-height: 100vh;
  min-width: 65vw;
  border-right: 1px dashed gray;
  border-left : 1px dashed gray;
  display: flex;
  flex-direction: column;
}

.book .body .title{
  font-size: calc(18px + 1.5vmin);
  font-weight: bold;
}

.book .body .head{
  display: flex;
  margin: 1ex 0px 1ex 0px;
  flex-direction: row;
  font-size: calc(12px + 1.5vmin);
  font-weight: bold;
  background-image:linear-gradient(to right, #1982cc, #ffffff);
}

.book .body .head label{
  flex: 1;
}

.book .body .head button{
  margin: 5px;
}

.book .body .head input[type='number']{
  margin: 5px;
  max-width: 4em;
}

.book .body .head select{
  margin: 5px;
}

.div-table{
  display: table;
  margin-left: auto;
  margin-right: auto;
  min-width: 65vw;
}

.div-table .row{
  display: table-row;
}

.div-table .row .col{
  display: table-cell;
  text-align: center;
  border: 1px dashed gray;
  padding: 5px;
}

.div-flex-row{
  display: flex;
  flex-direction: row;
  justify-content: center;
}